{"refrec":{"BRefID":392704,"RR":"<b>Dogliotti, A.; Piegari, E.; Rubinstein, L.; Perna, P.; Ruddick, K.</b> (2024). Using the automated HYPERNETS hyperspectral system for multi-mission satellite ocean colour validation in the Río de la Plata, accounting for different spatial resolutions. <i>Front. Remote Sens. 5</i>. <a href=\"https://dx.doi.org/10.3389/frsen.2024.1354662\" target=\"_blank\">https://dx.doi.org/10.3389/frsen.2024.1354662</a>","BEntID":390468,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Front. Remote Sens. 5</i>. <a href=\"https://dx.doi.org/10.3389/frsen.2024.1354662\" target=\"_blank\">https://dx.doi.org/10.3389/frsen.2024.1354662</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Dogliotti, A.; Piegari, E.; Rubinstein, L.; Perna, P.; Ruddick, K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Dogliotti, A. <i>et al.</i>","Englishabstract":"Validation of water reflectance using <i>in situ</i> data is essential to ensure the quality of ocean colour satellite-derived products useful for water quality monitoring, like turbidity and chlorophyll-a concentration. Since December 2021, the HYPERNETS automated hyperspectral system has been collecting data in the optically complex and highly turbid waters of the Río de la Plata, an ideal scenario for testing atmospheric correction algorithms’ performance. The site, located 60&nbsp;km south of Buenos Aires (Argentina), is described in relation to the water reflectance spectral features and variability using high spatial resolution imagery and a methodology is proposed to objectively select a sensor-specific location of a reference pixel for satellite validation. Six months of data is used to evaluate surface water reflectance operational products from multi-spectral systems like Landsat 8&amp;9/OLI (L89/OLI), Sentinel-2/MSI (S2/MSI) &amp; Sentinel-3/OLCI (S3/OLCI), and PlanetScope SuperDoves (PS/SD), and also non standard products for Aqua/MODIS (Aqua/MODIS) and SNPP&amp;JPSS1/VIIRS (SJ/VIIRS) missions. Moreover, the standard surface water reflectance product from the hyperspectral PRISMA mission could also be evaluated. The matchups show general good results when <i>in situ</i> measurements are compared to L2 standard products of high spatial resolution sensors that use land-based atmospheric correction approach, if sun glint contamination is avoided. Low mean relative percentage difference was found for S2/MSI (2.45%) and L89/OLI (−3.52%), but higher for PS/SD (30.7%). In turn, S3/OLCI medium resolution also showed low mean relative differences (2.31%), while SJ/VIIRS and Aqua/MODIS showed larger and negative differences (−16.35 for SJ/VIIRS and −35.6% for Aqua/MODIS) which showed a clear increase towards the shortest blue bands. The results show the great potential of the HYPERNETS automated system to provide high quality and quantity of data for validation of satellite data at all visible and near infrared (VNIR, 400–900&nbsp;nm) wavelengths in a multi-mission perspective.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Using the automated HYPERNETS hyperspectral system for multi-mission satellite ocean colour validation in the Río de la Plata, accounting for different spatial resolutions","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-10 01:32:57.949219","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"ocean colour, satellite validation, hyperspectral reflectance, autonomous system, Río de la Plata, turbid waters, LPAR","OtherDescriptors":null,"Notes":null,"AnaPub":2024,"MonPub":null,"DateUpdate":"2025-09-18","DateCreate":"2024-06-10","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001196553800001","VABBcode":null,"OpenAcc":1,"DOI":"10.3389/frsen.2024.1354662"},"refs":null,"anarec":{"AnaID":392704,"PubliDate":2024,"Pagination":null,"XtraPublOfAnaID":null,"ISBN":null,"Volume":"5","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":354250,"SerRR":"Frontiers in Remote Sensing. 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